8197

• UCREFRP Catalog Number: 8197
• Author: Martinez, P. J.
• Title: Development and Application of Procedures for Stocking Nonnative Fish Speacies in the Upper Colorado River Basin.
• USFW Year: 1997.
• USFW - Doc Type: Grand Junction, CO.
• Copyright Material: NO

13383
any decision to exclude areas-from rivers, including the confluence of
designation as critical habitat, including -smaller tributaries and other habitats
information provided during the public that provide essential fish habitat when
comment period, the Service inundated
determined that no exclusions were
justified due to economic
nd other Figure i. Map of combined critical
a
relevant impacts. habitat for the four Colorado River
endangered fishes.
Critical Habitat Designation BUM CODE 431x4
Ghtical habitat for each species is
shown by State irbFigure i and
summarized in Table 4. The ioo-year
flood plain delineates the lateral
boundary of the critical habitat for the
razorback sucker and Colorado
squawfish. This.boundary encompasses
the productive areas adjacent to the
i
t

1
1
I

I
TABLE 4.-RIVER KILOMETERS (MILES) OF CRITICAL HABITAT FOR FOUR ENDANGERED COLORADO RIVER FISHES..
.... r .. sucker Hur<p' TOW 1
?.v 349 583 95- 95. 583
Lhah (217)
11
7 (362) (59) (59) (362)
0 1168 224 •224 1172
New Mexioo Ow (726) (139) (139) (728)
63 . . 97 97
`< (60) .:
Arizuria _ 832 »?
. _ 291 832
(5
?.-_
(181)
ATJNevada • ' - -
_._...
209 103 209
(130) OR 130
AMHorda (
)
»-- - - 214- 8o 294
(133) o 183
m (
)
Basin TOW 2 2776 1848 610 502 3188
(1724) (1148) (379) (312) 3(1980)
1 ToW-13mWmes inckde atl. overtapp M critical habitat reaches by S tate for a6 tour CrAnrar4, aa r a.-6.,.,e.-4 r -.k
maem of cm= f== by Species
critical tabihat for the erdire Basin
3ToW-Basin Total-No6e that the IMM
an
by species is greater than actual river distance due to extensive overlap.
' Razorback Sucker 4). This represents approximately 49 Lower Basin. These reaches flow
The Service is designating 157eaches percent of the historical habitat for the through a variety of )andownerships,
of the Colorado River system as critical species. In the UPpim Basin, critical both public and private. The amount of
habitat is designated for portions of the
i
i
l h
habitat for the razorba& stick These
k Th
h t
cr
ca
abitat for the razorback sucker
Green
Yampa
Duchesne
Colorado
' reaches total 2,776 km (1.724 mi)

measured along the center line of the ,
,
.
, by landownership.in kilometers of
White, Gunnison. and San Juan Rivers. shoreline is presented in Table 5.

river within the subject reaches (Table portions of the Colorado, Gila. Salt, and
Verde Rivers are designated in the
' TABLE 5.-OWNERSHIP OF SHORELINE IN KILOMETERS (MILES) FOR CRITICAL HABITAT FOR THE ENDANGER
C
ED
OLORADO
RIVER FISHES 1
Ownerslup2 Razorback Colorado Humpback BonyharT
' sgAnnish chub cxlb
NPS
- 1,955 900 545 676
BLM
""--- -- (1,215) (55% (338) (420)
- - » 1.140 1,119 203 114
' (708) (695) (126) (71)

Federal Register / Vol. 59, No. 54 / Monday, March 21, 1994 / Rules and Regulations
SUM CODE 4310.WC